Comparison of Prevalence of Synovitis by Ultrasound Assessment in Subjects Exposed or Not to Self-Reported Physical Overexertion: The Monday’s Synovitis

Table 3

Findings in MCP joints grouped according to the hand dominance.

Findings^†	Dominant hand			Not dominant hand
	No overexertion	Overexertion	CC (approx. sig.)^‡	No overexertion	Overexertion	CC (approx. sig.)
2MCPSH (+)	10 (28.6%)	25 (71.4%)	<0.001	1 (12.5%)	7 (87.5%)	0.002
2MCPSH (−)	269 (72.3%)	103(27.7%)	0.255 (<0.01)	278 (69.7%)	121 (30.3%)	0.168 (<0.05)
3MCPSH (+)	10 (27.0%)	27 (73.0%)	<0.001	1 (33.3%)	2 (66.7%)	0.234
3MCPSH (−)	269 (72.7%)	101 (27.3%)	0.272 (<0.01)	278 (68.8%)	126 (31.2%)	0.065 (NS)

2MCPSH: synovial hypertrophy of the second metacarpophalangeal joint; 3MCPSH: synovial hypertrophy of the third metacarpophalangeal joint.
^‡Exact sig. (2-sided) for Fisher Exact test; CC: contingency coefficient.